Home / 30,975.12-42,705.36-22,470.48

Finding the Fourth Proportional to 30,975.12, 42,705.36 and 22,470.48

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Solution

The fourth proportional to 30,975.12, 42,705.36 and 22,470.48 is: 30,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.12 : 42,705.36 = 22,470.48 : x
  2. Step 2: Convert to fraction form
    30,975.12/42,705.36 = 22,470.48/x
  3. Step 3: Cross multiply
    30,975.12x = 42,705.36 × 22,470.48
  4. Step 4: Simplify right side
    30,975.12x = 959,609,937.77
  5. Step 5: Solve for x
    x = 959,609,937.77/30,975.12
  6. Step 6: Final answer
    x = 30,980.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.